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说明：  本压缩包内涵丰富，需要自己提取学习修改，其中包括无损检测，信号处，超声波仿真及相关程序，内含有帮助文档和学习文件文献。(This package is rich in content and needs to be extracted, learned and modified by ourselves, including nondestructive testing, signal processing, ultrasonic simulation and related programs, including help documents and learning documents.)

matlab仿真程序，适合初学者，比较实用，可用性高。(matlab simulation program, suitable for beginners, more practical, high-availability.)

8 band kp method calculate the valence band structure, using finite difference method

论文Active contours with selective local or global segmentation: a new formulation and level set method. Image and Vision Computing, vol.28, issue 4, pp.668-676, April 2010.的源代码.简单,容易学习(code for Paper K.H.Zhang, Lei Zhang, H.H.Song and W.Zhou.,Active contours with selective local or global segmentation: a new formulation and level set method. Image and Vision Computing, vol.28, issue 4, pp.668-676, April 2010.)

基于微分器的PID控制，是自动控制的重要组成部分，有着广泛的应用。(Differentiator-based PID control, automatic control is an important part, has a wide range of applications.)

CCNA learning materials

FOR HELP AND DOCUMENT FOR POWER DCV S

这是一个K中心算法的Matlab程序，很多用(This is a Matlab algorithm K center procedures, many with)

瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真瑞利衰落仿真(Rayleigh fading Rayleigh fading simulation simulation Simulation of Rayleigh fading Rayleigh fading simulation)

自己编写的基本的二进制GA程序，均匀交叉，单点变异(It is the cold of simple binary GA)